System for detecting small holes in moving articles
US5798531A · kind A · utility
5Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Jun 10, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/894
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A small hole detection system which detects small holes in fast moving sheets of material. An array of LEDs is pulsed from an emitter which is aligned with an array of photocells positioned to detect light emitting from the emitter. The receiver sends a signal to a processing unit when light is detected. The small hole detection system may include an auto-shuttering mechanism which automatically adjusts the system according to the width of the material being scanned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.